SOLUTION: If X has a normal distribution with mean 80 and standard deviation 12, what is the distribution of the mean of a sample of 9 of these values? Give the values of the parameters.

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Question 955023: If X has a normal distribution with mean 80 and standard deviation 12, what is the distribution of the mean of a sample of 9 of these values? Give the values of the parameters.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Mean of the sample means = 80
Std of the sample means = 12/sqrt(9) = 4